package pt.utl.ist.project_ccu;

import android.app.Activity;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.Window;
import android.widget.ImageView;

public class Image extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.activity_image);
		
		ImageView img = (ImageView) findViewById(R.id.img);
		Integer s = (Integer)getIntent().getExtras().get("id");
		Bitmap bitmap = decodeSampledBitmapFromResource(getResources(), s, 500, 500);
		img.setImageBitmap(bitmap);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.activity_image, menu);
		return true;
	}

	public int calculateInSampleSize(
			BitmapFactory.Options options, int reqWidth, int reqHeight) {
		// Raw height and width of image
		final int height = options.outHeight;
		final int width = options.outWidth;
		int inSampleSize = 1;

		if (height > reqHeight || width > reqWidth) {
			if (width > height) {
				inSampleSize = Math.round((float)height / (float)reqHeight);
			} else {
				inSampleSize = Math.round((float)width / (float)reqWidth);
			}
		}
		return inSampleSize;
	}
	
	public Bitmap decodeSampledBitmapFromResource(Resources res, int resId,
			int reqWidth, int reqHeight) {

		// First decode with inJustDecodeBounds=true to check dimensions
		final BitmapFactory.Options options = new BitmapFactory.Options();
		options.inJustDecodeBounds = true;
		BitmapFactory.decodeResource(res, resId, options);

		// Calculate inSampleSize
		options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

		// Decode bitmap with inSampleSize set
		options.inJustDecodeBounds = false;
		return BitmapFactory.decodeResource(res, resId, options);
	}
}
